Final answer:
The auditor would be most likely to learn that the current-year provision for uncollectible accounts is inadequate because of worsening economic conditions.
Step-by-step explanation:
The auditor would be most likely to learn that (d) the current-year provision for uncollectible accounts is inadequate because of worsening economic conditions. An auditor compares the current-year revenues and expenses with those of the prior year and investigates all changes exceeding 5 percent. If there has been a significant increase in uncollectible accounts in the current year compared to the prior year, it may indicate that the provision for uncollectible accounts is inadequate. This could be a result of worsening economic conditions, making it more difficult for customers to pay their debts.